#条件   if  elif else
str="zkj"
if str == 'zkj':
    print("是的")

# match 3.10以上才支持 类似switch

#循环 break continue
n = 0
while n<5:
    print("hello", n)
    if n==10:
        break
    n +=1
else:
    print("没有执行break退出循环，就走这里")
# for 循环
for i in range(5):
    print("hello,", i)

for i in (1,5):
    print("zaa,", i)

